Air conditioning unit



March 1, 1960 G. w. GREEN 2,927,188

AIR CONDITIONING UNIT Filed Oct. 22, 1958 2 Sheets-Sheet l George WGreen ZAZVEIJTOR,

March 1, 1960 G. w. GREEN 2,927,188

AIR CONDITIONING UNIT Filed Oct. 22, 1958 2 Sheets-Sheet 2 78 77 GeorgeM. Green 74 INVENTOR.

W BY

Unitfid StatesPatent O AIR CONDITIONING George-W.=Green,'Toronto,Ontario, Canada Applicationoctober. 22, 1958', minimise-.972

'3 Claims. ch 219 -120 This invention relates to a unit to condition airin a room-or the like, the unit operating to either cool or heat the airdepending on the desiresof the user. I

An object of the invention is to provide a: versatile air conditionerwhich may be used as a table on floor model in varying sizes to serve anumber of purposes. A typical embodiment of the invention has a casingwith a top assembly, and a blower mounted in the casing. The blowerdischarges upwardly toward the top assembly that is adjustable andremovable in order to direct the blast of air where it is desired orneeded.

A further object of the invention is to provide a unique air conditionerunit capable of a number of adjustments and functions for both cooling,that is by providing air circulation, and heating. The heating elementmay be used independent of the blower; the blower may be usedindependently of the heater; and the blower and heater may be usedsimultaneously with means being provided for adjusting the air flow inany of the above mentioned options. 3

These together with other objects and advantages which will becomesubsequently apparent reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing bad to the accompanying drawings forming a part hereof, whereinlike numerals refer to like parts throughout, and in which:

Figure l is a perspective view of a typical unit constructed inaccordance with the invention.

Figure 2 is a sectional view of the unit in Figure 1.

Figure 3 is a cross-sectional view taken on the line 33 of Figure 2.

Figure 4 is an enlarged fragmentary sectional detail taken on the line44 of Figure 3.

Figure 5 is a sectional view taken on the line 5-5 of Figure 2.

Figure 6 is an enlarged sectional detail taken on the line 6-6 of Figure2.

Figure 7 is a diagrammatic view showing the wiring of the unit.

In the accompanying drawings there is a combined cooling and heatingunit 10 with a casing 12 disposed on a substantial base 14. Casing 12 isapproximately in the shape of a truncated cone with the larger diameterpart upward and the smaller diameter part adjacent to base 14. A smallerdiameter part of the casing 12 is held elevated from base 14 by means ofspacers 16 located between the top surface of base 14 and a lateralflange 18 at the lower part of casing 12. Bolts 20 are passed throughaligned apertures in base 14, flange 18 and the bore of each spacer 16thereby holding casing 12 assembled with base 14 and spaced therefrom.Space 22 between flange 18 and base 14 is covered with a cylindricalscreen 24 to screen the air as it enters casing 12 from the lower partthereof. Base 14 has a raised mounting bracket 26 on which electricmotor 28 is bolted.

Motor 28 occupies the lower part of casing 12 and is concentric with thecasing. Motor shaft 30 extends from "2,927,188 Patented Mar; 1;, :1960

the motor and is located on the longitudinal axis of casing 12. Aspecial rotor 32 coupled with shaft 30 constitutes a. blower 34- adaptedtodrawair through the entrance or air inlet defined by space 22-andpropel the air upwardly through casing 12 to thedischarge opening 36 atits upper end. The blower. is made of an upper and lower webor spider 38and 40" respectively with at least one of them rigidly secured to shaft30. The spider 38 and 40 each has a ring at its periphery to whichsmoothly curved vanes 42- are fastened. Each vane has flat innerandouter edges and is longitudinally curved at one end, and.longitudinally curvedin the opposite direction at the opposite end. Thisis to provide av swirling movement of the air as it passes from theinlet 22 to the outlet or. discharge opening 36 in casing 12.

There is an outwardly curved rim 44' at the discharge end of. casing 12.This rim is. spaced from a circularly, smoothly curved in cross-sectionedge portion 46 of air diffuser 48. The air diffuser has a conicalcenter part which penetrates casing12, and portion 46 is spaced from rim36 an adjusted distance. The means for achieving the adjustment are seenbest in Figure 4.

There are a plurality of bolts 50, each of which is passed throughaligned openings in portion 46 and rim 44. A reinforcing plate 52 isattached to the partial spherical spaced walls 54 and 56 which aresecured to the top part of diffuser 48. Plate 52 is for reinforcing. Thebolts each have nuts 58 thereon, and each has a spring 60 locatedbetween portion 46 and rim 44. Therefore, the diffuser may be moved downor up with respect to casing 12 thereby adjusting the effective size ofthe discharge opening 36.

Wall 56 cooperates with the inner surface of diifuser 48 to enclose achamber 62 within which there is a heating element or heater 64. Theheater is preferably electrically energized. Since chamber 62 is a heatchambet, the space between walls 54 and 56 has insulation 66 therein.

The electrical circuit for the unit is simplified. Although not shown,the unit may be thermostatically controlled by using a conventionalthermostat connected in the circuit in the manner very well known inthis art. The illustrated circuit has a lead wire 70 adapted to connectwith a source of electrical potential. When an AC. source is used, oneside of the line has switch 72 therein and is connected with motor 28.The other side of the line extends directly to the motor whereby theswitch 72 exercises a control function over motor 28. The heater 64 hasa line cord 74 connected with it, for instance by a conventional maleand female plug and socket. The opposite end of the line cord isconnected in a socket 76 carried by base 12 adjacent to switch 72 thatis also carried by the base 12. Conductors 78 and 80 are attached to oneside of line 70 and the opposite side of line 70 between switch 72 andmotor 28. Therefore, the circuitry provides the option of using theheater alone, by simply plugging line cord 70 directly into the source;the heater and motor with switch 72 exercising a control function overboth; and the motor 28 which operates blower 34, alone, by merelyunplugging the electric heater 64.

In addition to the adjustment of discharge opening 36, the diffuser 48together with the heater 64 and chamber 62, may be separated completelyfrom casing 12 so that the blower will provide an air blast upwardtoward the ceiling in order to circulate air in the manner of a hassockfan.

The foregoing is considered as illustrative only of the principles ofthe invention. Further, since numerous modifications and changes willreadily occur to those t 3 skilled in the art, it is not desired tolimit the invention to the exact construction and operation shown anddescribed, and accordingly, all suitable modifications and equivalentsmay be resorted to, falling within the scope of the invention asclaimed.

What is claimed as new is as follows:

1. A unit for the conditioning of'air, said unit comprising a casing, ablower mounted in said casing, said casing having a base at its lowerend, said casing and base spaced from each other to provide an air inletfor the blower, said casing having an air discharge opening at its upperend through which the air propelled by the blower is adapted to pass,means for adjusting said air discharge outlet, said adjusting meansincluding an air difiuser having a marginal portion, resilient meansconnected with said air difiuser and said casing and adapted toyieldingly hold said portions spaced from said casing,

and means connected to said diffuser for displacing said v diffusertoward said casing and thereby altering the spacing between said portionand said casing, an upper wall on said air diffuser, said air diffuserhaving a lower wall spaced from said upper wall and cooperating withsaid upper wall to constitute a chamber, a heater located in saidchamber.

2. The unit of claim 1 wherein said heater and diffuser are separablefrom said casing so that the air delivered by said blower may passdirectly through the upper end of said casing.

3. A unit for the conditioning of air, said unit comprising a casinghaving a lower open air inlet end and an upper open end, a blowermounted in said casing for blowing air upwardly out of said upper end, adownwardly tapering hollow air diffuser depending into said upper end ofthe casing and forming a closed chamber having an electric heatertherein for heating air difiused by said diffuser, and manipulativemeans operatively connected to said casing and difiuser for variablyspacing said difiuser toward and from said open upper end of the casingto provide with said open upper end a discharge outlet for the heatedair of variable size.

References Cited in the file of this patent I 4 STATES PATENTS

